A cobpokation



Patented July 28;, 1931 UNHTE.

FFC

PATENT wrmrnn cHAaLns senators, or CINCINNATI, OHIO, AssIe-Non re rnnnnsczn'rr onmarcar. COMPANY, or cI CINNA'rI, omo, A conrona'rron' orcare PREPARED I MATERIAL F012.

He Drawing.

in water. Heretofore aluminum filings and turnings as well as aluminumdust have been em loyed, in such drain 0 ening compounds wit thegeneral. efiect of having a considerable art of the chemical action takeplace 2 while in substantially a state of suspension in the liquid. Thisis due to the lightness of the aluminum particles and to the violence ofthe chemical action wherein thetgases serveto drive. the particlesupwardl in the at liquid in a drain pipe. The particles of aluminumdust, filings and turmngs quickly dissipate themselves in the chemicalaction so that the heretofore used aluminum drain opening compounds havebeen but part1 e ecte and certaihlv not of a desirable hig standard ofeficiency.

It will he appreciamd that the ineificiency in drain opening compoundsis due principally to the nature an form of the metallic aluminum.

The present invention provides for a specially prepared ingot granularaluminum which will promote-a highly efiective heat producing compoundwhich is especially desirable for the purpose of freeing clogged drainpipes. p

The prepared aluminum comprises ingot granular aluminum which is firstsprayed with zinc and then rolled in order to provide an increasedsurface area.

tween rolls which flatten them and thus pro- The process may be carriedout by spray-V use IN imam orizNme comrou .eNn :Pnocnss err Applicationfiled June 21, 3.928. fierial No. 287,857.

vide an increased surface area for them and at the same time permit allof the sprayed zinc to remain on the surface. I In the compound whichmay comprise the prepared aluminum and caustic soda the activity isincreased for the following reasons. The increased surface area. permitsof greater chemical activity while the zinc retards the violence ofactivity at a given surface area and as a result a prolonged period ofchemical activity of the roper intensity is obtained. Another high ydesirable advantage lies in the fact that the specific gravity of theparticles is suficient to return them to the bottom of a vessel or pipedespite the action of the gases. in practical use the obstruction to beremoved comprises the bottom or base of a water containing section ofpipe so that the activity is practically confined to the desiredlocation. For this reason the mechanical scrubbing action of a drainopening compound comprising the prepared aluminum of this invention isan item of no small import especially in view of the fact that theexothermic action is likewise practically confined to the point ofobstruction. r

'1 hat is claimed is: l. The process of preparing aluminum for use indrain opening compounds, comprising employing granular ingot aluminum,then spraying molten Zinc on the aluminum to provide a surface depositfor each particle, then rolling the ingots to provide increased surfacearea therefor.

2. The process of preparing granular ingot aluminum for the purposedescribed comprising utilizing ingot granular aluminum, depositing zincon said ingots, then rolling the ingots to increase the surface areathereof.

3. The process of preparing aluminum for use in drain opening compounds,comprising using granular ingot aluminum, depositing a less active metalon the ingots and then rolling said ingots to increase the surface areathereof.

4. Asa new article of manufacture a prepared grain ingot aluminumcomprising mechanically flatter d ingots of aluminum.

with particles of zinc deposited on the surface area.

5. As a new article of manufacture a flattened aluminum ingot havingminute particles of zinc deposited on its surface. 7

6. A prepared grain aluminum for use in drain opening compoundscomprising a somewhat irregular flattened aluminum body having minuteparticles of zinc deposited on the surface thereof.

In testimony whereof, I have hereunto igbscribed my name this 20th dayof June,

3 CHARLES GANGLOFF.

